Honestly, when it comes to a class, it's really a toss up. If you had the teacher I had, you might have enjoyed it more. I had great professors who taught very well and impartially. I wouldn't base your opinion of philosophy classes off one instance. Again, it's bad to infer something about the whole from one thing. You should have learned that in an argumentation class.

Philosophy should be interesting and enjoyable since it gets you to think and be able to back up what you believe (or at least help you better understand what you believe).